Finding the Fourth Proportional to 1,431,823.91, 1,975,866.40 and 787,239.08
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Solution
The fourth proportional to 1,431,823.91, 1,975,866.40 and 787,239.08 is: 1,086,362.11
Step by Step Solution
- Step 1: Write the proportion equation
1,431,823.91 : 1,975,866.40 = 787,239.08 : x - Step 2: Convert to fraction form
1,431,823.91/1,975,866.40 = 787,239.08/x - Step 3: Cross multiply
1,431,823.91x = 1,975,866.40 × 787,239.08 - Step 4: Simplify right side
1,431,823.91x = 1,555,479,246,938.91 - Step 5: Solve for x
x = 1,555,479,246,938.91/1,431,823.91 - Step 6: Final answer
x = 1,086,362.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.